Exploring Scientific Variables and Their Roles

In this video, Mr. Conan and Jacob conduct a plant experiment to understand the impact of water on plant growth. They discuss the importance of keeping variables controlled to ensure a fair test. The experiment focuses on independent, dependent, and controlled variables. After spring break, they review the results, confirming that the amount of water affects plant growth. The video concludes with a clear explanation of the dependent variable, emphasizing its role in measuring outcomes.

What is the main focus of the experiment conducted by Mr. Conan?

• The effect of water on plant growth

• The effect of soil type on plant growth

• The effect of sunlight on plant growth

• The effect of music on plant growth

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

NGSS.MS-LS2-1

Why is it important to keep other variables constant in an experiment?

• To make the experiment more interesting

• To test multiple variables at once

• To save time and resources

• To ensure that the results are due to the variable being tested

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NGSS.MS-PS3-4

What is an independent variable in an experiment?

• The variable that is dependent on other factors

• The variable that is kept constant

• The variable that is measured

• The variable that is changed

Which of the following is an example of a controlled variable in Mr. Conan's experiment?

• The amount of water given to the plants

• The type of plants used

• The height of the plants

• The growth rate of the plants

What is the purpose of controlled variables in an experiment?

• To change multiple factors at once

• To make the experiment more complex

• To keep the experiment fair

• To measure the outcome

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NGSS.MS-PS2-2

What does the dependent variable in an experiment represent?

• The variable that is kept constant

• The variable that is changed

• The variable that is independent

• The variable that is measured

In Mr. Conan's experiment, what was the dependent variable?

• The amount of sunlight

• The type of soil

• The height of the plants

• The type of music played

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NGSS.MS-LS1-5

How can you ensure a fair test in an experiment?

• By not measuring any variables

• By keeping all variables constant

• By changing multiple variables

• By changing one variable and keeping others constant

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NGSS.MS-PS2-2

What did Jacob learn about the relationship between independent and dependent variables?

• Dependent variables depend on independent variables

• Dependent variables are changed

• Independent variables are measured

• Independent variables depend on controlled variables

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NGSS.MS-PS2-2

What should you remember when setting up an experiment?

• Keep all variables the same

• Have one independent variable and one dependent variable

• Measure multiple outcomes

• Change multiple variables